Single JavaScript file to convert any HTML page into a fully functional Progressive Web App. CDN-ready, zero setup, works everywhere. Made with privacy in mind.

Color Picker PWA application built with HTML, CSS and JavaScript. It supports HEX, RGB and HSL color formats, copy to clipboard, dark mode, social sharing and add-to-home-screen installation. The app works offline using a service worker and includes manifest support for PWA features.

面向 Android Chrome 的 COOWIN 网站 PWA 安装页，支持二维码访问、自定义安装按钮、桌面图标、Service Worker 和安装状态提示。

Multi-wallet personal finance PWA — categorized income and expense tracking, recurring transaction automation, and a canvas-rendered spending chart. Zero dependencies, no build step, strict CSP. Installable on iOS and Android.

Offline-first shift and paycheck tracker — one-tap clock in/out, week-grouped history, hours-vs-paid reconciliation, and multi-sheet XLS export generated entirely in-browser. Zero dependencies, no build step. Installable PWA.